Drain outlet



Jan. 5, 19320 a. w. HARRENGTQN DRAIN OUTLET Fild May 14, 1951.

R O T N E V N NEY Patented Jan. 5, 1932 LEWIS W. HARRINGTON, OF NEWYORK, N. Y.

DRAIN OUTLET Application filed May 14,

My invention relates to drain outlets for roots and the like and it ismy object to produce a seamless, jointless, one piece outlet to whichmembrane waterproofing may be connected in such a way that a permanent,moisture proof joint is effected and which is so constructed that anydesired hydrostatic or gaseous pressure may be applied to the drain pipeto which it is connected to force W the same tree from obstructions.

In the drawings Fig. 1 is a sectional View of my improved outlet; Fig. 2atop view of the structure of Fig. 1; F ig. 3 a detail, sectional iewshowing how the membrane wa- 55 terproofing is connected to the outlet;and

Fig. 4 a view, partly in section of the blowout plug used in clearingthe pipe line from obstructions. V

The outlet is a one-piece, seamless, jointless casting without openingsthrough which moisture can seep or leak. It comprises the body 1 whichtapers down to the threaded pipe connection 2 at the bottom into whichthe drain pipe is screwed from below. At the larger, or top end, ahorizontal flange 3 is formed, partly inside and partly outside'the sidewalls of the body 1 as shown in Fig. 1.

At the inner edge of this horizontal flange 3 a surrounding, verticalstop wall 4 is formed.

The portion of the horizontal flange immediately adjacent the outside ofthe body is thickened at 5 and a groove or reglet 6 is formed in itsupper face. The extreme outer portion of the flange 3 is thinned at 7and the thinned portion is located between the upper and lower faces ofthe part 5.

In use the outlet is set in the roof or other portion of a building, asshown in Fig. 3, with the top of the flange part '7 on a line with thetop surface of the root and membrane waterproofing, such as tar orasphalt paper, is laid over the roof and over the flange part 7 until itis built up level with the top surface of the thickened part 5. Aflashing sheet of copper or the like 9 is then laid over the first laidmembrane waterproofing, the edge turned down and calked into the grooveor reglet 6. Successive layers of membrane waterproofing 10 are thenlaid over the flashing sheet and thickened part of the horizontal 1931.Serial No. 537,476.

that any desired air or water pressure may be applied to the pipe toforce it clear and tree of obstructions.

I claim.

A one-piece, seamless jointless outlet for use with roots or" relativelygreat thickness and the like comprising a body portion terminati n atits lower portion in an internally threaded part adapted to receive adrain pipe and a blow-out lug, a horizontal flange on the upper end ofthe body extending partly inside and partly outside the walls of thebody, a vertical stop wall adapted to prevent entry of foreign materialinto said outlet at the inner edge of the horizontal flange, said flangeoutside of and adjacent the body being thickened and provided with acalking groove, said flange being thinned at its outer edge, saidthinned portion being located between the upper and lower faces of thethickened portion.

In testimony whereof I have afixed my signature.

LEWIS W. HARRINGTON.

